To Operate inside the nation, you need to have a work allow (Autorização de Trabalho) in the Ministry of Labor. To obtain it, you need to be sponsored by an employer ahead of getting into the region. The process of using the services of non-Brazilians might be a rather elaborate https://evergreen-friends.com/userinfo.php?op=userinfo&action=view&userinfo=cecila-dominique.451691